Mathematics
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角度ニガテで…

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✨ Best Answer ✨

BCに線を引きます。
△OBCは二等辺三角形になるので、∠OBC= 62°
また四角形ABCDは円に内接する四角形なので、向い合う角の和は180°
∠ADC+∠OBC+∠OBA=180
70+62+x=180
x=48°

里奈

ありがとうございます😊

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